JPS5485139A - Forming method for blackened film on iron meterial surface - Google Patents

Forming method for blackened film on iron meterial surface

Info

Publication number
JPS5485139A
JPS5485139A JP15408677A JP15408677A JPS5485139A JP S5485139 A JPS5485139 A JP S5485139A JP 15408677 A JP15408677 A JP 15408677A JP 15408677 A JP15408677 A JP 15408677A JP S5485139 A JPS5485139 A JP S5485139A
Authority
JP
Japan
Prior art keywords
blackened film
atmosphere
iron
film
meterial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15408677A
Other languages
Japanese (ja)
Inventor
Hisato Kihara
Masaharu Kanto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15408677A priority Critical patent/JPS5485139A/en
Publication of JPS5485139A publication Critical patent/JPS5485139A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • C23C8/18—Oxidising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To obtain a blackened film of stable grade suitable for parts such as shadow mask by pretreating iron material in an atmosphere of air under specific conditions to scatter and burn contaminants on the material surface prior to formation of the film under predetermined conditions. CONSTITUTION:Iron material such as shadow mask or inner shield material for a color picture tube is treated in an atmosphere of air at 250-400 deg.C for 5-30 min to scatter and burn contaminants such as press oil attached to the material surface. The material is then treated in an atmosphere of steam and carbon dioxide at 550- 600 deg.C for 5-30 min to form a blackened film. By this method stable blackened film grade is obtd. which is highly valuable in practical use.
JP15408677A 1977-12-21 1977-12-21 Forming method for blackened film on iron meterial surface Pending JPS5485139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15408677A JPS5485139A (en) 1977-12-21 1977-12-21 Forming method for blackened film on iron meterial surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15408677A JPS5485139A (en) 1977-12-21 1977-12-21 Forming method for blackened film on iron meterial surface

Publications (1)

Publication Number Publication Date
JPS5485139A true JPS5485139A (en) 1979-07-06

Family

ID=15576577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15408677A Pending JPS5485139A (en) 1977-12-21 1977-12-21 Forming method for blackened film on iron meterial surface

Country Status (1)

Country Link
JP (1) JPS5485139A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59215487A (en) * 1983-05-19 1984-12-05 Brother Ind Ltd Method and device for blackening of article to be treated

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59215487A (en) * 1983-05-19 1984-12-05 Brother Ind Ltd Method and device for blackening of article to be treated

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